Crossword Genius

Concerned with bone in big duck? (6)

Ross

I believe the answer is:

osteal

I'm a little stuck... Click here to teach me more about this clue!

'concerned with bone in' is the definition.
I know that 'bone' relates to this answer. I also know that both the answer and definition are adjectives

'big duck?' is the wordplay.
'big' becomes 'os'.
'duck?' becomes 'teal' (teal is a type of duck).
'os'+'teal'='OSTEAL'

Can you help me to learn more?

(Other definitions for osteal that I've seen before include "made of bone" , "skeleton may be thus described" , "Relating to bone - so late (anag)" , "of bones" , "Bony" .)

I've seen this clue in the Sydney Morning Herald.
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